fix aria-describedby attributes on user profile page
fix aria-describedby attributes on user profile page

test plan:
 - go to /profile/settings and click "Edit settings"
 - ensure aria-describedby attributes link fields to
   their descriptions correctly (the attribute names an id,
   not a selector; it shouldn't start with '#')

fixes CNVS-28219

Change-Id: Ia331abd6285ee233e3914a7f1997d283bb7860f2
Reviewed-on: https://gerrit.instructure.com/75286
Tested-by: Jenkins
Reviewed-by: Joel Hough <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@instructure.com>
QA-Review: Deepeeca Soundarrajan <5bcd4b623f00b7fc2942cd1c65c245b30a48a61f@instructure.com>
Product-Review: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>

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